DesignCon 2002

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Abstract A fundamentally important aspect of high speed channel design at 10 Gb/s is that significant optimization of the physical channel is required. Path degradation in channels, from ISI effects, causes poor signal quality and must be minimized or eliminated. This paper explores how equalization, statistical analysis, and accurate models can be used to optimize high speed channels. A case study, based on a 10 Gb/s BladeServer Ethernet backplane, will serve to illustrate how an integrated approach using equalization, accurate physical models, and statistical simulation can be used to optimize the design of an industrial application. Author(s) Biography Pravin Patel Pravin Patel pravinp@us.ibm.com Pravin Patel is a Senior Engineer and Technical Leader working for IBM xSeries Server Development. He is involved in defining product architecture, creating product strategies, and time and Frequency Domain SI analysis/simulation of Intel base server products. His current activities include the design and analysis of Serdes interfaces for BladeCenter product. He performs modeling, simulation and measurements of the high speed serial link Channels. The other areas of his responsibilities include design and development of models for line cards, backplanes, traces, via and performing simulations for system level voltage and timing budgets and jitter characterization. He is an active member of T11.2 and IEEE802.3 channel model standard committee from IBM. He received a B.S. degree in electrical engineering from the New Jersey Institute of Technology in 1989. Pravin has received 12 U.S. Patents, 3 IBM Invention Plateau Achievement Awards, 7th IBM Authors Recognition Awards, one IBM Outstanding Technical Achievement Awards, and One IBM Corporate Award. IBM. He has authored or co-authored 25 technical papers in IEEE EPEP, IEEE ECTC and <strong>DesignCon</strong> conferences. Jeff Cutcher Jeff Cutcher joined Ansoft Corporation as an Applications Engineer in 2005 with a focus on supporting their Designer, Nexxim, and SIwave products. Prior to joining Ansoft, Jeff held the position of Senior Staff Electrical Engineer at Motorola, where he was involved in various wireless communications development projects that included digital, analog, and RF circuit design, to pcb layout, and system modeling and simulation. Jeff is currently a Senior Member of the IEEE, a registered Professional Engineer in the State of Florida, and holds his BSEE and MSEE from New Jersey Institute of Technology. Tony Donisi Tony Donisi has been a Senior Applications Engineer for Ansoft since 2000. During his time with Ansoft, he has developed a broad range of applications and designs in many different areas, such as RF & microwave circuits, wireless communication systems, and SI related products. Prior to Ansoft, he worked as a RF design engineer for over 17
years. He worked at companies including Raytheon, M/A-Com, and Alpha industries. He was primarily involved with military and commercial receiver and transmitter module design, including MIC’s and MMIC’s. Design and analysis work included broadband and low noise MMIC & MIC amplifiers, components and subsystems; image reject and sub-harmonic mixers; frequency conversion modules; phase locked loops; monopulse radar systems and microwave and millimeter wave T/R modules. He earned his BSEE from Northeastern University, Boston, MA and his MSEE from UMASS Amherst. Michael Tsuk Michael Tsuk received the BSc, MSc, and Ph.D. degrees in Electrical Engineering from MIT in 1984, 1986, and 1990, respectively. In 1990, he joined Digital Equipment Corporation, where his primary responsibilities were designing and maintaining Digital’s internal electromagnetic CAD software, and consulting on its use for signal integrity, power integrity, and EMI modeling. He was promoted to Consulting Engineer at Digital, became a Member of the Technical Staff after Digital’s merger with Compaq in 1998, and an Expert after Compaq’s merger with Hewlett-Packard in <strong>2002</strong>, after each merger expanding the user base of his software throughout the larger corporations. In 2003, he joined Ansoft Corporation, becoming part of the Nexxim team, where his primary responsibilities concern models for transient simulation of lossy coupled transmission lines and general frequency-dependent structures described by scattering parameter matrices. He is the holder of four patents and is the author of numerous technical papers. Steve Pytel Steve Pytel joined Ansoft Corporation as an Applications Engineer in 2007 focusing in high speed interconnects; he supports tools such as Ansoft Designer, Nexxim, SIwave, HFSS, and Q3D. Prior to joining Ansoft, Steve held the position of a Senior Hardware Design and Signal Integrity Engineer at Intel Corporation where he was responsible for the signal integrity of Telco, Enterprise, and ATCA Blade form factor servers. He also focused on high speed electrical interconnect modeling research where he and a team developed frequency dependent dielectric transmission line models that incorporated various forms of copper surface roughness loss. Steve received a Bachelors of Science in Electrical Engineering from Northern Illinois University, a Masters of Engineering, and a Doctor of Philosophy in Electrical Engineering from the University of South Carolina.
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DesignCon 2002

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